摘要:
Equipment for the semi-continuous direct chill (DC) casting of sheet ingot or slabs of different dimensions, in particular for rolling purposes, including a mold frame (2) with a pair of facing long side walls (3) and a pair of facing short end walls (4). The walls of the mold define an upwardly open inlet for the supply of metal and a downwardly facing outlet provided with a starter block (5) on a movable support which prior to each casting closes the opening. The equipment includes a device for changing the mold dimensions where at least one end wall can be displaced to enable casting of ingots with different sizes, and it further includes a device for indirect and direct cooling of the metal during casting. The equipment also includes apparatus for flexing the long side walls (3) of the mold, thereby enabling adjustment of the flexible middle part of the long side walls (3) inwardly or outwardly to adapt to the desired sheet ingot size, the desired casting speed and/or alloy composition.
摘要:
Die Erfindung betrifft eine Kokille (14, 58), aufweisend eine erste und eine zweite Schmalseitenplatte (28), deren Abstand (36) zueinander verstellbar ist, sowie eine erste und eine zweite Breitseitenplatte (16). Damit ein metallurgischer Prozess, insbesondere ein Stranggussprozess, effizient durchgeführt werden kann, wird vorgeschlagen, dass die Kokille (14, 58) mindestens einen Abstandssensor (30) aufweist, der dazu eingerichtet ist, ein abstandsabhängiges Sensorsignal zu erzeugen, und welcher derart angeordnet ist, dass das Sensorsignal von einem Abstand zwischen der ersten Schmalseitenplatte (28) und der ersten Breitseitenplatte (16) abhängig ist.
摘要:
A continuous casting mold is provided in which a first drive mechanism 7a and a third drive mechanism 7c disposed in the top-bottom direction of a stationary mold longer side 1a are operatively connected by a first connecting shaft 22a, a second drive mechanism 7b and a fourth drive mechanism 7d disposed in the top-bottom direction of the stationary mold longer side 1a are operatively connected by a second connecting shaft 22b, and when the first and second connecting shafts 22a and 22b are rotated about their axes, the first to fourth drive mechanisms operate in conjunction with each other, and the first to fourth drive mechanisms change the inclination angle of a movable mold longer side 1b, in which the taper shape of the mold longer sides can be optimized without connection in the left-right direction, and that has simple drive mechanisms compared to the four point independent control system.
摘要:
A molten metal mold and bottom block system, including apparatus and method embodiments, which may include a mold cavity framework with a first side, a second side opposite the first side, a third side, and a fourth side opposite the third side, each side including an inner surface and the inner surfaces defining a mold cavity, and wherein one or more of the sides are movably mounted relative to the second side, and are controllably moved during the casting. This system may also include embodiments wherein the castpart produced has a tapered form at one or both of the castpart ends. Aspects of this invention may be considered to be a castpart shrinkage management system or a castpart form or profile control system due to the advantage of increased controls of castpart form during the casting process.
摘要:
A continuous casting mold assembly (10) has four mold walls (74a, 74b, 74c, 74d) in the form of discrete plates. The mold walls (74a, 74b, 74c, 74d) are arranged with an edge face (94) of each wall (74a, 74b, 74c, 74d) abutting a major face (91) of an adjacent mold wall (74a, 74b, 74c, 74d). To permit changes in taper, each of the mold walls (74a, 74b, 74c, 74d) is mounted for pivotal movement on two orthogonal axes. The mold walls (74a, 74b, 74c, 74d) are held together by springs (54) which can be hydraulically relieved when the mold walls (74a, 74b, 74c, 74d) are to be adjusted. The mold walls (74a, 74b, 74c, 74d) tend to move away from one another following hydraulic relief of the springs (54), and such movements are limited by screws (88) associated with the respective mold walls (74a, 74b, 74c, 74d). The screws (88) contact abutments (36, 42) when the mold walls (74a, 74b, 74c, 74d) have moved apart by distances large enough to allow pivoting of the walls (74a, 74b, 74c, 74d) but not large enough to permit molten material to leak between the walls (74a, 74b, 74c, 74d).
摘要:
Flanged structural products are rolled directly from rectangular slabs using only a universal mill having web rolls of fixed width corresponding to a selected finished web depth of the finished product. Original slab width is dependent upon the area ratio of the web and flanges in the intended finished product. Flanged structural products are rolled directly from rectangular slabs using only a universal mill having web rolls of fixed width corresponding to a selected finished web depth of the finished product. Original slab width is dependent upon the area ratio of the web and flanges in the intended finished product. As the slab thickness is reduced between web rolls, flange rolls simultaneously apply pressure to the longitudinal edge surfaces of the slab, moving material toward the slab's center. The edge surfaces of the slab become upset in each pass so that the slab thickness at the edges exceeds the original slab thickness. As rolling proceeds, the web rolls are brought closer together as are the flange rolls. At every set point of these rolls, the cross section of the now deformed slab maintains a fixed ratio of areas between the web and the flanges, the same area ratio as in the finished product. The web and flange rolls are moved in precalculated increments until the slab takes on a finished wide flange shape, ready for use in the construction industry.